Channel Islands National Park weather in December
December in Channel Islands National Park: cool, rainy, with clean air — a great time to visit.
#12 of 12 months in Channel Islands National Park · #182 of 604 destinations to visit in December · comfort 78/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Channel Islands National Park climate normals — December
| Daytime high | 15°C / 58°F | 🙂 cool |
|---|---|---|
| Nighttime low | 11°C / 52°F | |
| Feels like (high) | 13°C / 55°F | |
| Rainfall | 89 mm / 3.5 in | 🌧 rainy |
| Rainy days | 7 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 10°C / 50°F | |
| Sunshine | 7.7 h/day | |
| Daylight | 9.9 h | |
| Wind | 27 km/h / 17 mph | |
| Air quality (US AQI) | 34 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Channel Islands National Park?
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Channel Islands National Park in December — FAQ
- Is December a good time to visit Channel Islands National Park?
- December in Channel Islands National Park: cool, rainy, with clean air — a great time to visit. It ranks #12 of 12 months for Channel Islands National Park on SeasonMap's comfort score (78/100).
- What is the weather like in Channel Islands National Park in December?
- In December, Channel Islands National Park averages a daily high of 14.6°C and a low of 11.3°C, with about 88.9 mm of rain over roughly 7.4 rainy days.
- What is the air quality in Channel Islands National Park in December?
- Channel Islands National Park has a mean US Air Quality Index of about 34 in December.